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when we have to use UPF wattmeter and LPF wattmeter? what is the difference between UPF and LPF wattmeter in terms of construction?
2441when we have to use UPF wattmeter and LPF wattmeter? what is the difference between UPF and LPF wattmeter in terms of construction?
4 24369can any one tell me the formula to select the thickness of wire selection according to ampere rating
2 4544I want to know the currect formula for industrial lighting lux caluculation & light fittings selection
MRF,
2 7816why the earth is taken minimum in supplying? wather it the proportional factor to getting work any equipment or a power plant?
1853A 100 kVA , 400 v/250 kv testing transformer has 8% leakage reactance and resistance on 100 KVA base . A cable has to be tested at 500 kv using the above transformer as a resonant transformer at 50 hz . if the charging current of the cable at 500 kv is 0.4 A find the series inductance required . Assume 2% resistance for the inductor to be used and the connecting leads . Neglect dielectric loss of hte cable . what will be the input voltage to the transformer ?
L&T,
5192If a motor of 30KW rating &200 mtrs distance from feeder give me the cable size selection calculation?
1722Post New Electrical Engineering Questions
why does connected a indutor with mnsformeretering core of current transformer ?
when ac current flows thru d coil of a contactr,it energizes,magnetic field attracts d contact of the coil...nw wont dt ac current in d contct induce current back on to d coil thru mutual inductance leading to high currnt in d coil
why the projects getting loss?
how could we calculate the no of outgoings from a 800 watt distribution board
two phases with neutral supply can be taken in 3C X 10 sq.mm cable .
I use 20 nos led tube 4feet, in pathway 100mtr approximate, so what size cable i use for lighting
what is the voltage regulation for unity and zero power factor?
What is the purpose of stand by earth fault protection for transformer ?
Define resonant frequency?
What are the disadvantages of hydropower?
What are the types of piano switches?
what is the role of energy meter in distribution system ?
what are the applications of TIG welding
what kind of technical test that i need to learn because i have an interview tomorrow.. please someone help me..
1.what is meaning of curve into a mcb. 2.what is basic reason changing of curve
